Biotin Ultimate Strength Nail Strengthener – Vitamin B7 Treatment for Weak, Thin & Peeling Nails – Helps Grow Stronger, Harder, Longer Natural Nails in 3 Days

I have purchased this nail strengthener several times, and it has become one of my favorite nail care products. It dries quickly, is easy to apply, and leaves a smooth, clear finish that works well on its own or as a base coat. With consistent use, I've noticed that my nails feel stronger and are less likely to peel or break. It also helps them grow longer while maintaining a healthier appearance. Overall, this is a product I continue to repurchase because it delivers reliable results. If you're looking for an effective nail strengthener for weak or brittle nails, I highly recommend giving this one a try.

I swear on my life, there is nothing I recommend to people more than this strengthener as a basecoat. I had been absolutely SUFFERING with nails that would shatter at the tips or have that flap on the side that is just like, whoops, bye! INSTANTLY, even in one coat, this stuff helped. I've finally been able to grow my natural nails out longer than the press-ons I had been stuck under for ages. And they're strong enough to slam in doors, or shred things with them-- like this stuff weaponized the heck out of them! (I mean, not LITERALLY, ofc) Get this stuff. It's cheap, it looks smooth and dries insanely fast. It'll keep your polish on without chipping away and then just do it again after your next mani too. Thrive. You won't regret it!

I love this product and it's not my first time purchasing it, the only reason I am taking one star away is the bottle was almost broken at the screw on part when I received it. I am more apt to think it would have happened by the machine and sometimes those things happen but it will make using it a bit harder so I will just need to use caution while I am opening and closing the bottle. The screw on just seems to be rough and won't work unless I force it closed, which leads me to think that it probably was a machine error, but since this has never happened before, I only took off one star. The product itself is great so I keep buying it as it does help to keep my nails strong and help with growth. I just apply one coat to my nails before applying polish or wraps then use a top coat to finish or this has even been used as a top coat if none other is available. If you have weak or brittle nails, it really does help and give it a few days adding a coat to your nails each day, or every other day which ever works for you.

Very good! Lasts a while for wear, works great and strengthening the nail and keeping flimsy nails hard. Would recommend this brand to anyone.

I bought this after wearing acrylic nails for months, and my natural nails were left weak and damaged. After using it consistently, I noticed they felt much stronger and finally started growing again without breaking so easily. They also look healthier and have a nice natural shine. I’m really happy with the results and will definitely keep using it.

This product seems just average. Like any clear strengthener, it temporarily adds a hardness to my nails. However, it starts wearing from the edges quickly. It also does not seem to help improve the strength of my nails over time. I'm disappointed that this did not seem to do more.

This is a great product. It doesn't chip, even after a week. I type and file every day and it continues to look great while it protects my nails from breakage.

Nail-Aid Biotin Ultimate Strength is incredible! My nails were brittle and peeling, but after using this treatment regularly they've become noticeably stronger and harder. The biotin formula works. The clear formula looks natural and can be worn under polish or alone. Easy to apply with the brush included. I noticed improvement within two weeks. Highly recommend!

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No cumple con lo que dice, 2 semanas usándolo y las uñas están igual ,ni endurece ni crecen más fuerte Para mi todo un engaño

It is as good as Mavala blue water. Very good product, really helped for strengthen and grow my nails.

I have very brittle soft nails that don’t grow very well. I ordered 2 of the bottles of Nail Aid Biotin Ultimate Strength nail treatment and as this is the second day I have used it I don’t have a real sense of trying it out. It goes on very well and the 2 coats did seem to have made my nails less bendable. The nails have a high gloss which looks great and I have to put a second application of 2 coats on in 1 day after using a polish remover and cleaning the nails. This is the first time I have felt comfortable that this product will work as no other nail strengtheners have done so.

fantastic product changed my nails completely I bought both this one and the sapphire strength one and use them alternate days could not be happier highly recommend